SLP Harmonic Balancer/Underdrive Pulley - 1997-09 Corvette (LS1, LS2, LS6, LS3)

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Now: $182.56
Was: $219.95


SLP's 25% underdrive balancer for the LS1/LS6/LS2/LS3 Corvette and 2008-09 L76 Pontiac G8 and 2009 GXP incorporates a number of high-quality features you won't find on any other aftermarket unit. Chief among them are a pair of extra-tall belt-retention walls that eliminate the belt-slippage issues common to other balancers. Gains of up to 10 horsepower can be expected. Other unique design strengths include 100% steel construction (other brands use steel and aluminum), integral timing marks, and built-in puller-mounting threads. Includes a new balancer bolt and detailed installation instructions.

NOTE: Balancer requires two new belts not included.

C5/C6 Corvette
Main Belt: Gates 6PK1900 or Equivalent
Accessory Belt: Gates 4PK1040 or Equivalent

Pontiac G8/GXP
Main Belt: 6PK1860 or Equivalent
Accessory Belt: 4PK1050 or Equivalent


  • Extra-tall belt-retention walls-no more thrown belts!
  • No aftermarket tensioner required
  • 100% steel construction
  • Lighter than the stock balancer
  • Integral timing marks and puller-mounting threads
  • Keyed for high-rpm or supercharged applications
  • Does not cause false knock retard or erratic power-curve dips
  • Includes a new balancer bolt
  • SFI Approved
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Special Order Terms Notes

Special Terms:
This brand is special order, can take longer, and is not cancelable (Refer to order terms - ). If concerned about delivery time please contact us before purchase.
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